Merge branch '5.0'

* 5.0:
  [Console] fix "data lost during stream conversion" with QuestionHelper

Author: fabpot

Diff for: Helper/QuestionHelper.php

@@ -461,10 +461,6 @@ private function validateAttempts(callable $interviewer, OutputInterface $output
         $error = null;
         $attempts = $question->getMaxAttempts();
 
-        if (null === $attempts && !$this->isTty()) {
-            $attempts = 1;
-        }
-
         while (null === $attempts || $attempts--) {
             if (null !== $error) {
                 $this->writeError($output, $error);
@@ -476,6 +472,8 @@ private function validateAttempts(callable $interviewer, OutputInterface $output
                 throw $e;
             } catch (\Exception $error) {
             }
+
+            $attempts = $attempts ?? -(int) $this->isTty();
         }
 
         throw $error;
@@ -516,7 +514,7 @@ private function isTty(): bool
             return stream_isatty($inputStream);
         }
 
-        if (!\function_exists('posix_isatty')) {
+        if (\function_exists('posix_isatty')) {
             return posix_isatty($inputStream);
         }